Since 1985, that's been the gist of Pizza Hut's Book It, an incentive program used by 50,000 schools nationwide to reward young readers with free pizzas. The program is now under attack by child-development experts who say it promotes bad eating habits and turns teachers into corporate promoters.

Book It, which reaches about 22 million children a year, "epitomizes everything that's wrong with corporate-sponsored programs in school," said Susan Linn, a Harvard psychologist and co-founder of the Campaign for a Commercial-Free Childhood.

"In the name of education, it promotes junk food consumption to a captive audience ... and undermines parents by positioning family visits to Pizza Hut as an integral component of raising literate children," Linn said.

This week, Linn's organization called on parents to end their schools' participation in the long-standing program.

Though some activists have previously questioned Book It, Linn said Friday that only after the recent upsurge of concern over child obesity and junk food did her group feel it could make headway with a formal protest campaign. She said many schools are trying to reduce students' access to soda, and contended that Book It should face similar scrutiny.

But the program -- which has given away more than 200 million pizzas -- has deep roots and many admirers at the highest levels of politics and education. It won a citation in 1988 from President Reagan, and its advisory board includes representatives of prominent education groups, including teachers unions and the American Library Association.

"We're really proud of the program," said Leslie Tubbs, its director for the past five years. "We get hundreds of e-mails from alumni who praise it and say it helped them get started with reading."

Dallas-based Pizza Hut says Book It is the nation's largest reading motivation program -- conducted annually in about 925,000 elementary school classrooms from October 1 through March 31. A two-month program is offered for preschoolers.

Participating teachers set a monthly reading goal for each student; those who meet the goal get a certificate they can redeem at Pizza Hut for a free Personal Pan Pizza. Families often accompany the winners, turning the event into a celebration that can boost business for the restaurant.

Teachers find the program an enjoyable way to build interest in reading, Tubbs said. "We're helping them to do their jobs," she said.

At Strafford Elementary School in Strafford, Missouri, the roughly 500 students collectively read 30,000 books a year with Book It's help, said principal Lucille Cogdill.

"I don't have any negative things at all to say about it," Cogdill said. "I know there's concern about obesity, but Book It is not causing it, and the schools aren't causing it."

Chris Carney, principal at Bennett Elementary School in Fort Lauderdale, Florida, also is a Book It fan, saying it encourages family togetherness and provides a tool for persuading children to try books instead of video games.

Among those campaigning against Book It is Alfie Kohn, an author whose 11 books on education and parenting include "Punished By Rewards", which questions the value of incentive programs.

"The more kids see books as a way to get pizza or some other prize, the less interest they'll have in reading itself," Kohn, a former teacher, said in a telephone interview. "They tend to choose easier books to get through faster."

Another critic of Book It and the broader phenomenon of corporate incursions into schools is Alex Molnar, director of the Commercialism in Education Research Unit at Arizona State University.

He described Book It as a "dreadful program" that puts pressure on parents to celebrate with their reward-winning children at Pizza Huts.

"This is corporate America using the schools as a crow bar to get inside the front doors of students' homes," he said. "It's very hard for children whose parents who don't want to engage in this to not feel ostracized."

Molnar acknowledged that Book It is well-regarded by many educators and politicians, but said it might be reevaluated in light of rising concerns about child obesity.

"To the extent that this program is correctly identified as part of the problem, then there's a chance of reducing its scope," he said.

I think these people need to get off their high horses. One personal pan pizza a month for 6 months is not going to hurt a kid, and the program does work to help get reluctant readers to pick up a book. I know from experience with my own son, and from working with second graders for 9 years.

__________________Pop: I haven't talked to Tim in about 6 or 7 years. If I did, he wouldn't listen to me anyway. It says that he's mean and rude!